Greek lemon chicken

Ingredients (4 servings): 8 small (250g each) chicken thigh cutlets (skin on), trimmed 1 medium red onion, cut into wedges 1 medium red capsicum, cut into strips 4 garlic cloves, unpeeled ½ cup chicken stock 2 medium lemons 250g cherry tomatoes 1/3 cup pitted olives 2 tablespoons chopped fresh flat-leaf parsley leaves 1 tablespoon chopped…